usr/src/lib/mpapi/libmpscsi_vhci/common/Sun_MP_SendScsiCmd.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25
  26 #include <syslog.h>
  27 #include <errno.h>
  28 #include <unistd.h>
  29 #include <stropts.h>
  30 #include <sys/scsi/impl/uscsi.h>
  31
  32 #include "mp_utils.h"
  33
  34
  35 /*
  36  *      Called by the common layer to request to steer a path
  37  */
  38
  39 MP_STATUS
  40 Sun_MP_SendScsiCmd(MP_OID pathOid, struct uscsi_cmd *cmd)
  41 {
  42         mp_iocdata_t mp_ioctl;
  43
  44         int ioctlStatus = 0;
  45
  46         MP_STATUS mpStatus = MP_STATUS_SUCCESS;
  47
  48         log(LOG_INFO, "Sun_MP_SendScsiCmd()", " - enter");
  49
  50         log(LOG_INFO, "Sun_MP_SendScsiCmd()",
  51                 "pathOid.objectSequenceNumber = %llx",
  52                 pathOid.objectSequenceNumber);
  53
  54         if (g_scsi_vhci_fd < 0) {
  55                 log(LOG_INFO, "Sun_MP_SendScsiCmd()",
  56                     "invalid driver file handle");
  57                 log(LOG_INFO, "Sun_MP_SendScsiCmd()", " - error exit");
  58                 return (MP_STATUS_FAILED);
  59         }
  60
  61         (void) memset(&mp_ioctl, 0, sizeof (mp_iocdata_t));
  62
  63         mp_ioctl.mp_cmd  = MP_SEND_SCSI_CMD;
  64         mp_ioctl.mp_ibuf = (caddr_t)&pathOid.objectSequenceNumber;
  65         mp_ioctl.mp_ilen = sizeof (pathOid.objectSequenceNumber);
  66         mp_ioctl.mp_xfer =
  67             ((cmd->uscsi_flags & USCSI_READ) ? MP_XFER_READ : MP_XFER_WRITE);
  68         mp_ioctl.mp_obuf = (char *)cmd;
  69         mp_ioctl.mp_olen = sizeof (*cmd);
  70
  71         log(LOG_INFO, "Sun_MP_SendScsiCmd()",
  72                 "mp_ioctl.mp_cmd (MP_SEND_SCSI_CMD) : %d",
  73                 mp_ioctl.mp_cmd);
  74
  75         ioctlStatus = ioctl(g_scsi_vhci_fd, MP_CMD, &mp_ioctl);
  76
  77         log(LOG_INFO, "Sun_MP_SendScsiCmd()",
  78                 " IOCTL call returned: %d", ioctlStatus);
  79
  80         if (ioctlStatus < 0) {
  81                 ioctlStatus = errno;
  82         }
  83
  84         if (ioctlStatus != 0) {
  85                 log(LOG_INFO, "Sun_MP_SendScsiCmd()",
  86                     "IOCTL call failed.  IOCTL error is: %d",
  87                         ioctlStatus);
  88                 log(LOG_INFO, "Sun_MP_SendScsiCmd()",
  89                     "IOCTL call failed.  IOCTL error is: %s",
  90                         strerror(ioctlStatus));
  91                 log(LOG_INFO, "Sun_MP_SendScsiCmd()",
  92                     "IOCTL call failed.  mp_ioctl.mp_errno: %x",
  93                         mp_ioctl.mp_errno);
  94
  95                 if (ENOTSUP == ioctlStatus) {
  96                         mpStatus = MP_STATUS_UNSUPPORTED;
  97                 } else if (EPERM == ioctlStatus) {
  98                         mpStatus = MP_STATUS_NOT_PERMITTED;
  99                 } else if (0 == mp_ioctl.mp_errno) {
 100                         mpStatus = MP_STATUS_FAILED;
 101                 } else {
 102                         mpStatus = getStatus4ErrorCode(mp_ioctl.mp_errno);
 103                 }
 104
 105                 log(LOG_INFO, "Sun_MP_SendScsiCmd()",
 106                         " - error exit");
 107
 108                 return (mpStatus);
 109         }
 110
 111
 112         log(LOG_INFO, "Sun_MP_SendScsiCmd()", " - exit");
 113
 114         return (MP_STATUS_SUCCESS);
 115 }